Hot-water heater.



G. C. GILL P. S. SINCLAIR 61 P. MOAKLER.

. HOT WATER HEATER.

APPLICATION FILED DEC. 17; I915.

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APPLICATION nizn u:c.|1. ms.

G. C. GILL P S. SINCLAIR 61.1. MOAKLER.

WITNESS. 4 W

G. C. GILL, P. SINCLAIR & P. J. MOAKLER.

HOT WATER HEATER.

. APPLICATION FILED DEC.17.I9I5- y y 3 SHEETS-SHEET a.

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AM A-TTO M UNITED STATES PATENT OFFICE.

onoaon C. GILL, rnrna s. SINCLAIR, AND PATRICK J. MOAKLER, or noLYoKE, MASSA- CHUSE'I'TS, ASSIGNOBS TO HOLYQKE HEATER COMPANY, or HOLYOKE, MASSACHU- SETTS, A CORPORATION or MASSACHUSETTS. I

HOT-WATER HEATER.

Application filed December 17, 1915.

To all whom z't may concern:

Be it known that We, GEORGE C. GILL, PETER S. SINCLAIR, and PATRICK J. MOAK- Len, citizensof the United States of America, residing in the city of Holyoke, county of Hampden, and State of Massachusetts, have invented certain new and useful Improvements in HotWVater Heaters, of which the following is a specification.

This invention relates to improvements n hot water heating devices of the type 1n which the water heating coils are located within an inclosing casing or combustion chamber, the opposite ends of the coils being connected to a manifold, or common pipe connection, that is connected with the usual cold water receiving and hot water discharge pipes. The casing includes a closing door that is hinged thereto to permit ready access to the coils for insertion, removal. cleaning or-repair purposes.

In heaters of this type it has been the common practice to employ illuminating gas for the heating fuel. It has been found that there is a large public demand for heaters of this type in which a burner that utilizes oil or. other liquid would be very. desirable.

An object of the present invention, therefore, isin the placing of an oil or other liquid fuel burner immediately below and within. the open end of the combustion chamber, the chamber itself, in which the coils are located, serving the combined purose of a chimney and combustion chamer, thus doing away with the usual chimney and bringing the water heating coils in close contact with the flame within the chamber. A further object of the invention is in providing suitable means for connecting the burner to the combustion chamber in order to insure perfect combustion or theproduction of a blue-flame Within the chamber, by supplying the requisite quantity of air to'the interior of the chamber.

A further object is to provide means for guickly attaching and detaching the burner rom the chamber. A further object is to provide means for" forming an air tight oint, or practically so, between the burner and the chamber. A further ob 'ect is to provide means for excluding explosive vapors or dangerous gases from gaining access to the interior of the combustion chamber, as

Specification of Letters Patent.

Patented Nov. 13, 1917. Serial N 0. 67,365.

it is often desirable to use the heater in localities where there are gasolene or other dangerous fumes, as in garages or in motor boats.

Referring to the drawings:

Figure 1 is an elevational view showing the interior of the combustion chamber with the water heating coils located therein, also showin an oil or other liquid fuel burner attache .with hot vapors and gases within the chamher to make the desired blue-flame;

Fig. 4 is a combined elevational view showing the blue-flame hot water heater connected to a steam or hot water radiator.

Referring to the drawings in detail: 1

designates the combustion casing with the water heating coils fl located therein. 3 is the usual door that is pivotally attached to. the lower end of 'the chamber,, and adjacent to the lower end of th il to the casing for closing the same. 4 is an outwardly and downwardly extending flar ing portlon that is formed integral with the main portion of the casing for providing means for securing the burner in place and locating it the correct distance below the--lower ends ofthe coils. This extension includes a ledge or shelf portion.5 having openings 6 in the side ,of the extension. The upper end of the extension 4 adjacent to the lower portion ofthe combustion casing 1 is formed with a semi-circular shaped groove 7. This groove is for the purpose of receiving the head 8 near the upper end of the ring 9. This ring 9 is formed with a bent portion 10 designed to engage the removable collar 11 of the burner that is shown in Fig. 2. Thiscollar is pron-led withthe supporting brackets 12 which engage the rim 13 of the wick receiving tube 14. The ring 9 is also formed with openings 15 in addition to the annular passageway 15 for admitting the necessary quantity of air to the interior of the combustion easing 1 in order to produce a blue-flame or per- 5 feet combustion within said casing, the locasuch as to tion of the perforations being toward the direct the incoming air inwar flame of the burner, as shown.

The wick receivin tube 14 is attached or secured to the base piece 16 by means of the clamp 17, which clamp serves the purpose of connecting the liquid fuel feed pipe 18 which communicates with the fuel reservoir 19 and-the intermediate fuel chamber 20. The feed pipe is secured to the base plate 16 by means of the clamps 21. The outer end of the feed pipe 18 is closed by means of a cap 22 which is for the purpose of attach-- ing the fuel tanks 19 and 20 to this end of feed pipe as convenience may require, in-

stead of at the left as shown in Fig. 1. The plate 16 rests upon the ledge or shelf portion of the downward extension 4 and is retained in place on thisportion by means of the machine screw 23 that enters a projection or boss 2 1 on the rear side of the plate 16.

A double wire gauze or perforated plates 25 and 26 and 26 are employed, which act on the principle of the miners safety lamp, that permit the external air and gases to pass through to the flame, but at the same time prevent the flame from back firin and .coming in contact with the external an dangerous gases or fumes which might form an explosive mixture.

This improvement utilizes the coil receiving combustion casing 1 in which the heating coils 2 are placed. Ithas been deter mined in practice that perfect combu stion always takes place a definite distance from the flame of the burner, and, therefore, by makingthecasing 1, in whichthe coils 2 are placed of suitable length, a blue-flame is obtained within the casing producing hot gases and vapors which act directly on and in contact with the coils. Therefore, there is obtained by means of a suitable liquid fuel a very eflicient, compact water heating aparatus, in which the blue-flame is utilized. t will be seen that said casing serves the combined purpose of an inclosing casing for the coils, a chimney to carry away the products of combustion, and as a combustion chamber for the vapors and gases from said burner and the external air drawn into said casing.

It Will be noticed from Fig. 2 that the downward, extension 4 is substantially sem.i-- circular in form, thereby permitting the base plate 16 andthe burner 14. to be readily inserted in, and removed from, the casingby simply remolving the attaching screw 23. If-

piece. Particular attention should be directed to the fact that the groove. 7 and bead 8 serve to provide practically an air-.

for engaging and resting on the curved brackets 12 and that the outer and upper edge of the ring extends parallel with the axis of the casing and engages the lower inner surface of the casing and door to form an air tight joint between the casing and ring at that point of engagement of the easing and ring. The elasticity of this ring serves to retain it close against the inner surface of the casing forforming an air tight 'oint even if the bead 8 was entirely omitted. twill be seen from this invention that a hot water heating apparatus is produced in which kerosene oil or other liquid fuel can be utilizedfor heating the. water, and one that is not dependent on they supply of illuminating gas. It is also obvious that the apparatus may be used for heating purposes as the manifold pipes 27 and 28 may be attached to suitable radiator shown in Fig. 4, either for steam or hot water heating in addition-to attaching directly to a hot water tank. 29 designates the discharge pipe of the coils connected to the radiator 30; 31 the return pipe from the radiator to the lower ends of the water heatingv coils 2. 33 is a pipe connection extending from the pipe 29 to the. radiatQr EEO'L The Water line of the radiator is'ifidicated by the dotted line 34. 85 is"a water gage glass to in dicate the level of the water Within the radiator lfa ving the usual pet cocks 36. 37 is the usual air valve or vent for the radiator. A draw-off valve is indicated at 38. 39 represents the filling tube for the radiator. This figure shows the application of the heater illustrated in detail in Figs. 1 and 2 and 3, to a steam or hot water radiator, the heating coils 2 in the combustion casing being connected directly to this radiator. The pipe 33 being located below the water line, the heater or radiator will operate quietly, that is to say, the circulation of water through the radiator and coils will not produce any noise. If desired, however, the radiator may be completely filled with water, then, the circulation would be through the pipe 29, to the connection '10, and return to the coils 2, by means of the connection 31. This combination between the radiator and a liquid fuel burner produces convenient means of heating water without resorting to illumiand around the heating coils of the heater.

-From the above description it will be seen that the usual chimney construction is dispensed with, and, in its place the casing 1,

in which the heating coils 2 are located serve as the combustion casing instead of the usual chimney used heretofore for that purpose, By employing the perforated ring between the burner and easing the necessary quantity of external air, in addition to that supplied by the annular passageway 15', is admitted to the interior of the casing to produce a blue-flame and the heat from which comes directly in contact with the heating coils. Since there is no intermediate chimney between the burner and the casing, this construction, therefore, permits the utilization of the largest. number of heat units contained in the fuel.

We are aware of the construction of hot water heaters of the coil type in which illuminating gas burners are employed for the heating element, shown for example, in the patents to Rnud No. 903,007, Nov.. 3, 1908; Frampton No. 916,292, March 23, 1909, ad that to lleissner ct al. No. 996,427, June 527, 1911 but we are not aware of any ronstriuztions wherein liquid oil burners are employed for heating the water in the coils. Our special improvements are confined to the ring means located between the oilburner, at the lower end oi the casing, and the inclosing casing for supplying the correct volume of air to the interior of th'ecasing in order to produce a blue flame within the casing and around the coils.

lVhat we claim is:

1. In a hot water heater, water heating pipes, an inclosing combustion casing in which the said heating pipes are located, an oil burner for heating the pipes, means comprising a removable perforated ring areslniped in cross section and located between the burner andthe casing, said. means "forming practically an air-tigl'it joint between the burner and the combustion casing in order to direct the flow of the external air through the perforations to the inside of the inclosing combustion easing above the burner, whereby the correct volume of air is supplied to the interior of the chamber in order to produce a blue-flame and perfect combustion within the chamber and about the water heating pipes and consume all the vapors and gases from the burner.

2. In a hot water heater, a combustion casing to receive the heating coils, said casing having a downwardly extending inclincd integral portion for supporting the burner, the downwardly extending portion being substantially semi-circular in form to provide a normally open side to permit the ready insertion and removal of the burner, and means at the, rear of the downwardly extending portion for detachably securing the burner in place.

3, In a hot-water heater, an inclosing combustion casing to receive the water heating coils, an oil burner for heating the coils, a

door for said casing, a removable perforated ring between the burner and casing and having a beaded portion, the casing and door having a recess near the lower border thereof to receive the beaded portion of the ring, for forming practically an air tight joint between said casing and said ring, said ring having perforations to admit external air to the interior of the casin in order to supply the correct volume 0 air in order to produce a blue-flame and perfect combus tion within the casing.

4. In. a hot water heating device, a common inclosing combustion and heating casing, coils located in said casing, a burner, means comprising an open front extension of said casing for detachably supporting the burner, a perforated ring member for substantially closing the air space between the burner and the casing, the ring member and casing having inter-engaging portions to 'form practically an air tight joint between said ring and easing.

5. In a hotwater heating device, an inclosing combustion and heating casing for the coils, an oil burner dctachably supported on an extension of said casing, a base-piece .to which the burner is secured, means for preventing back firing from combustible fumes or gases which gain access to the interior of the combustion and heating casing, and removable means between the burner and casing for forming[practically an'airtight joint between saidimeans and the com bustion casing.

0. In a hot water heater, a combustion casing, coils therein, an oil burner detachably secured to said casing, a ring arc-shaped in cross section designed for support on the wick-receiving tube of the burner for forming practically an airtight joint between said tube and the combustion casing, the ring having perforations to admit the necessary volume of air to'the interior of the combustion chamber to produce a blue-flame within said chamber,- whereby perfect combastion is produced, as described.

7. A removable ring, arc-shaped in cross section, for closing the space between an oil burner and the combustion casing in which the water heating coils are located, said ring having its lower inncncurved edge designed to engage a curved surface on the burner and its upper edge extending in a direction parallel to the axis of the casing for engaging the lower edge of the casing and its door for forming an air-tight joint between the ring and casing, said ring having perforations at its lower curved portion and means at its upper portion to engage the inner surface of the casing to form a tight joint betwen the ring'and said casing, the perforations being for the purpose of admitting the 8. In an internal combustion hot-water heater, the combination with a suitable liquid fuel burner, a casing of uniform diameter above the burner, Water heating coils within said casing, means comprising a removable perforated ring arc-shaped in cross section between the casing and burner for supplying the necessary volume of air to the interior of the casing to produce a blueflame therein, said casing serving the combined purpose of an inclosing casing for the coils, a chimney to carry away the heated products of combustion and to serve as a combustion chamber for tln. vapors and gases from said burner, and said ring having its outer upper edge arranged parallel with the axis of the casing and engaging the inner lower surface of the casing to form a. tight joint between the ring and casing.

9. A hot-water heater comprising in combination with an inclosing combustion cas- .ing in which the water leating coils are placed, an oil burner at the lower end of the casing, a collar on the ring, a perforated casing between the burner and casing for furnishing the correct volume of external air to the interior of the combustion cham her in order to produce a blue-flame in the chamber, said ring having its lower inner end bent into a curve for engaging a collar on the burner and its upper outer end being substantially parallel with the axis of the casing to engage the lower inner surface of the casing for forming an air-tight joint between the ring and easing, the perforations in the ring being so located as to direct the stream of incoming air inward toward the flame of the burner.

1.0. A water heater comprising in combination with an inclosing casing, water heat ing coils therein, a depending extension of the casing having an open front and a platform for detachably supporting an oil burner, a door for closing the casing and terminating at the lower end of the same, a removable perforated ring, arc-shaped in cross section, which is supported on the burner and designed to substantially close the s ace between the burner and casing and for .orming an air tight joint between said ring and the lower end of the casing and door, all constructed and arranged as and for the purpose described.

11. A water heater comprising in combination with an inclosingcasing and an extension at its lower end which is formed with an open front and shelf for receiving an oil burner, of means comprising a screw at the rear side of the extension for detachably securing the burner to the shelf on the extension, water heating pipes located Within the casin for heating the water as it flows throng said pipes, the burner being spaced from the inner side of the extension and the lower end of the casing, a removable perforated ring, arc-shaped in cross section, engaging the upper outer part of the burner and the inner lower border of the casing, all constructed and arranged for producing a blue-flame within the casing, and said casing serving the combined purpose of an inclosing casing for the water heating coils, a. chimney to carry away the heated products of combustion, and a combustion chamber for the blue-flame, substantially, described for the purpose described.

12. In a hot water heater, an inclosing combustion casing to receive the water heating coils, an oil burner for heating the coils, a door for said casing, a removable perforated ring between the burner and casing for forming practically an air-tight joint between said casing and said ring, said ring having perforations to admit external air to the interior of the casing in order to supply the correct rolume of air in order to produce a blue-flame and perfect combustion within the casing.

13. In a hot water heating device, a common inclosing combustion and heating casing, water heating coils located in said casing, a blue-flame oil burner, means for supporting the burner, a perforated ring 1ne1nher for substantially closing the air space between the burner and the casing, the ring member and easing having engaging por tions to form practically an air-tight joint' between said ring and easing.

GEORGE G. GILL. PETER S. SINCLAIR. PATRICK J. MOAKLER. 

